I think I am fairly even handed), but those have not been faked. Well, I guess you could suggest they have been faked by Nissan, as they used stock footage.
I know because I dug those out myself from Nissan's website, and from there up to youtube.com
Jay: Regardless of the source, the "backing up" clip is a fake. The car was NOT backing up: the video was played backwards, as I pointed out above. That sound was thus superimposed over the segment, and is not a bona fide recording of what one would hear when a Leaf backs up. The sound is possibly similar to this mock version, but we don't yet know for sure.